This regex will help you retrieve all the digits that are present in the string.

Regex is powerful and makes this a simple procedure.

public class FindAllDigitsInString{   public static void main(String args[])   {      FindAllDigitsInString findAllDigitsInString = new FindAllDigitsInString();      findAllDigitsInString.proceed();   }   private void proceed()   {      String alphaNumericString = "No#10,Prime Conclave,56014";      String allDigitsInString= alphaNumericString.replaceAll("[^0-9]", "");               System.out.println("All the digits in string: " + allDigitsInString);   }   }/*

Expected output:

[root@mypc]# java FindAllDigitsInString All the digits in String: 1056014*/